diff --git a/ws2012/P2P/uebungen/11/src/node/FileIdentifier.java b/ws2012/P2P/uebungen/11/src/node/FileIdentifier.java
new file mode 100644
index 00000000..fdcb8be7
--- /dev/null
+++ b/ws2012/P2P/uebungen/11/src/node/FileIdentifier.java
@@ -0,0 +1,16 @@
+package node;
+
+public class FileIdentifier extends Identifier {
+	
+	private String key;
+
+	public FileIdentifier(int size, byte[] bytes, String key) {
+		super(size, bytes);
+		this.key = key;
+		// TODO: key muss noch gehasht werden
+	}
+	
+	public String getKey() {
+		return this.key;
+	}
+}
diff --git a/ws2012/P2P/uebungen/11/src/node/Node.java b/ws2012/P2P/uebungen/11/src/node/Node.java
index 569fc260..d9b26e44 100644
--- a/ws2012/P2P/uebungen/11/src/node/Node.java
+++ b/ws2012/P2P/uebungen/11/src/node/Node.java
@@ -45,6 +45,7 @@ public class Node {
     private DatagramChannel channel;
 
     private Map<Identifier, List<Ack>> rpcs = new HashMap<Identifier, List<Ack>>();
+    private Map<Identifier, Identifier> values = new HashMap<Identifier, Identifier>();
 
     private Thread thread;
     private UDPHandler udpListen;
@@ -302,6 +303,14 @@ public class Node {
     public Set<NodeIdentifier> getNeighbors() {
         return routingTable.getEntries();
     }
+    
+    public void StorePair(FileIdentifier key, NodeIdentifier id) {
+    	values.put(key, id);
+    }
+    
+    public boolean hasKey(FileIdentifier key) {
+    	return values.containsKey(key);
+    }
 
     public boolean receivedRPC(NodeIdentifier fromID, Identifier rpcID) {
         List<Ack> rpcsFromID = rpcs.get(rpcID);